Twist-lace machine



NOV '12, 1929. NQYER ET AL 1,735,651

TWIST LACE MACHINE I Filed Dec. 15. 1924 4 Sheets-Sheet 1 Nov. 12, 17929. F. NOYER ET AL' 1,735,651

TWIST LACE MACHINE Fi led Dec. 15,1924 4 Sheets-Shet 2 ZZ'zT/VESSES Nov. 12, 1929. F. NOYER ET AL 1,735,651

TWIST LACE MACHINE Filed Dec. 15, 1924 4 Sheets-Sheet. 5

Nov. 12, 1929. F. NOYER :1 AL 1,735,551

TWIST LACE MACHINE f Filed Dec. 15, 1924 I 4 Sheets-Sheet 4 INVEN-TORS: Fhx NOYER Pm PILHRD R th s.

Patented Nov. 12, 1929 i FELIX NoYiiia Ann PAUL rinann cr oALAIs, FRANQE TWIST- LACE IIIACHINE Application filed December 15, 1924, Serial No, 756,146, and in France February 12, 1924. i

This invention relates to twist lace Inachines of Leverstand go-through type. Lace produced by Levers or gothrough machines, consists: of a series of '5 threads disposed parallel to each other and longitudinally with respect to the length of thematerial; threads which are twisted about certain of the last mentioned threads by j acquard mechanism; and threads, which may be regarded as weft threads, and have ate and fro disposition transversely with respect to the length ofthe fabric and at right angles to the longitudinally disposed threads.

The object of the invention, hereinafter del5 scribed is to provide mechanism of novel con struction which carries a single thread to and fro throughout the entire width of the fabric, from edge to edge. v

'The operations attained by the mechanism hereinafterdescribed and claimed consist in introducinginto machines for making tulle and lace a supplementary weft crossing over, for the entire width of the loom, the warp threads passed through the bars and the gimp threads or embroiderers unroll themselves fromthe carriages in such manner that this weft permits of obtaining of Woven fabric, plain or embroidered, of tightened mesh upon machines usually makingnets and lace with 0 wide spaces or interstices; besides, this weft suppresses the necessity of making connections between lengths of fabric'since it joins the vertical threads'together.

Finally by the said mechanism the operaof a third series of threads to the two series offthreads woven together upon these machines and to pass-this third thread horizontparted to tliemby suitable mechanism such asacam. 7

Further, the invention, consists of a particular :construction and arrangement of partszof needle operating mechanism and tion is obtained which consists in the addition ures 1 to 4 and more ticular construction andarrangement of parts of mechanism for imparting reciprocating movement to the needlecarrying bar; 7 k

' Further, the invention consistsin 'aparticular arrangement .of needle operating Y mechanisms, which are constructed-according to this inventiomwith twist lace machines.

Further, the invention consists in the combinationwith the particular mechanismsde scribed, ofneedles found to be most effectivetoefiieient operation. 1 ,7 1; l 1

Reference being had'to the drawings hereiw-ith:

, v I a V F igure 1 shows,-1n s1de elevation, Levers 7 .niechanism for operatinga needle, and means for controlling the thread which is .used by the needle; Fig. 2shows alternative mechanism for controlling the thread; Fig. 3

shows, in end'elevatio'n, aform' of support for the mechanism Fig. 4'; illustrates ,the application of duplicated mechanism to a lace machine.

I Figure 5 shows a form of needle 7 in the form of. a tube split longitudinally at 8 and $0 I of gutterorU-shape. V I t,

Figure 6' shows another fornrof needlel) of tubular shape and not slit and preferably of oval section. v v v Figures 7 to 1 3 show,in detail, parts o'fi s5' mechanism described with reference to Figparticularly referred to hereinafter; 1

v Referring first to 1 the-needle ,7 is

capable of sliding movement inguidesl on bar'l, which is reinforced at its upper edge by a strip of metal 2 which has aiperforation 2* to further guide and retainth'e needle in place. j i

Referring to Figurefi the needle 7 is con- 1 struc'ted in the form of a longitudinally split .shape and preferably of ovalsection Both these forms of needles have an enlargement tionary parts so that,b "means'ofdraw-bars at their lower ends and said needles are respectively applicable tothel manufacture of different materials.

The bar 1 has groovedrollers 6 upon one face, the rollers engaging edges of bars 3 supported as hereinafter described, by stal vand suitable mechanism, it can be reciprocated. A very suitable mechanism for the puroose is shown in Fig. 11 and comprises a cam 36 operating against an anti-friction roller '36 on a lever 37', capable of oscillation and having a slot 37 to engage over a pin 38 in a rack bar 38. The teeth of this bar. engage'a pinion 39. on a shaft 39 whichalso' end, is pivoted tojthe bar- 1 at 12.

It will be understood that when the/ bar 1 is drawn along its guide bars 3 until the :pin 1 8 rides 'up'thec'am ]1 9,the link 11 and "lever -11 will raise the needle asindicated by the dotted lines; the needle and levers'falling I when the pin 18 recedes from the cam;

In order to assist the needle in withdraw 'ing the "th-read 'froma roller or spool it is passed-over a wheel '(Figs. 1 and 7) car- 'Vried near the end of a lever 26 pivoted to the bar1at27; a lever 28 being pivoted to thecleve'r 26 at 28'? and to a slide 29.0n the V upper bar 3. \Vhen thebar 1 moves in one direction, the friction of the s1ide'29 on the 'bar 3 will cause the lovers to partly straighten and draw the wheel towards the upper bar,

s and, when the platemoves in the other direcgtio'n, to resume their former positlons and carry the wheel on to the lower bar; The

l iwhel therefore always turns inthe same dia d havinga slotjfl at its rection. V 7

'Alternative mechanism for operating the wh eel'25 is shown in F ig. 2, which illustrates 'thejreverse side of thebar 1 a'sshown in Fig. 1.

Thewlieel operateson this side of thebar 1 and is carried by a pin 25 on a; lever 26wl1ich "is piVo-tedtothe plate 1 at 27 itsfree end be- 111 normallyraised by a spring 32 so that the 'iwheel- '25" engages the upper rail. When' howeven theplate lffr eaches th'e end of its stroke,

onearln o'fra bell-erank lever 31-,pivoted-at3-1 to the bar :1, comes into contact with'a fixed I: 3O onone-of'the lower bars-3. This'raises "a link 31", connecting the lever '31 with one freeendof a lever 31, i'p'ivotedto theplate let other end to engage-'2. pin 31 on a rod 34. This'rod,being capable: of sliding in brackets 34 depressed and draws down the spring 32, perniitting the wheel 25 to fall, by reason of" its weight, and engage the lower rail. The wheel is kept in this position byfapawl 33 engaging the upper end of the rod 34'; the pawl being pivoted to the plate 1 at- 33 and pressed into effective position by a spring '34, The wheel 25 again engagestheupper'rail-B when the pawl comes into contact with a cam 35 on the upper railin the manner shown at 35% The rails-3 can besecured to and spaced from a support 4 (Figs. 3 and 4), the rollers running between them, or, one rail 3 can be secured, as-at 5,;to a support 4 gthe rollers 6, On

the bar 1, running on the upper and lower odgesof, the rails? q 1 Theme'chanism, so far described" and shown in Fig.3 may be and-is shown asv duplicated V in its application -to a "Leve1slace Lmachine as illustrated in Fig. 4, there-being two sup neath the usual opening 46v which isbetrween the so called' -c01nb-bars &4 ofthelae, I flshine; the bars 1 being-preferablyslightly inclined inwardly at their-upper edges, One ofthe supports eextendsupwardly and has a projecting pin 4&7 which supports certain es sential parts of the lace machine. 7 V

A support 45 4) between thebars 1,

carries thread gripping mechanism, ;,shown in detail in Figs. 9 and 10;, and comprises a hook carrying bar 20, or bars,- as shown n pivoted thereto, at '22, a h00k;-21 .-;-its purpose being to grip-and retain the thread beneath sorts 4; for guide rails '3-.. The improved needle 'operatingmechanism is supipor-tedbe- Asituated near tojthe needle,='and having FIOO the carriages duringtheir-moveinents, and to p free the thread at the exact moment when the needle rises. A'-"c lraw'-b a;r 23 -oper ated-by any known mechanism, su'chas-a cam, isslidably disposed beneath the bar 20 and has 13a long-itudinalview of'the r'elevantparts of 'r 1 the machine; As shown in these figures-a series of bars 48 beiI-igsteel blades arranged parallel to one another in the central opening 7 of the machine and carried by brackets pro,- vided with holes in which-pass; the chain Ii stitches A coming from the bobbins 49. disposed beneath th'emachineareprovided. V v

I iio These bars :aredisplaoeable independently I of one another before each passage of the shuttle in a rectilinear movement of slight amplitude so as'to incline. the threads from A' toA according to their axis and by V i reason of-the jacqu'ardmechanism.

" I A series of carriages 50' each having: al-bobbin 51 oscillating altogether perpendicularly to the bars 48 and above them between the combs or support guides 52 by passing through the central opening of the machine in order to cross and twist the threads B with the threads A.

These carriages are moved by the driving cover bars 53 which draw together and then move apart simultaneously from the centre of the machine by regular movement due to cams. 1

Two ranges of points 54 c me down in turn, pick up the threads which have been passed and twisted A-B so as to tighten them onthe line X--55 above which the lace is terminated and wound upon the cylinder 56.

To these known parts are added according to the invention, a new-needle carrying bar 1; displaceable 1n the opening of the machine parallel with the bars 48, from one end to the other of the machine. 7

This bar carries a hollow needle 7 hereinbefore described in which passes the thread U which unwinds from the bobbin 57 disposed beneaththe machine as illustrated in Figure 12. At each passage of the carriage 50 by reason of a series of pivotally connected levers 11, 11, 11, the extremity of one (11) of which carries a roller 14 which meets, in

its movement, one of two inclines 15, whereby the needle 7 delivers the thread C at C to the points 54 which pick up at the same time as the twisted threads A-B.

Two oscillating claws 17 placed each one at the extremity of the machine, holding back the thread C beneath the carriages during their passage across the central openingso that they shall not be broken at C, releasing then the thread after this cross passage at the moment when the needle 7 rises.

W e claim 2 1. In a twist lace machine, a needle, a bar carrying said needle, means supporting said bar, levers carried by said bar in operative pivotal connection therewith, means for imparting motion to said levers, said levers being pivotally connected and one of said levers being pivotally connected to the needle to impart reciprocating motion thereto.

2. In a twist lace machine, a needle, a bar carrying said needle, means supporting said bar, levers pivotally connected to said bar and to each other, mechanism such as a cam for imparting motion to said levers, one of said levers being pivotally'connected to the needle to impart reciprocating motion thereto.

3. In a twist lace machine, a needle, a bar carrying said needle, means supporting said connected to-the needle to lug. motion thereto.

.4. In a twist lace machine, carrying said needle, means supporting said bar, a strip at the upper edge of said bar for reinforcing'the same, a. guide opening therein for, the needle, a vertically, disposed guide for said needle, levers pivotallyconnected to said vbar and to each other,one of said levers being pivotally connected to the needle; to impart reciprocating. movement thereto, draw-bars, av cam for imparting reciprocating movement to the'needle carry-' ing bar,a stationary and adjustable cam, one ofsaid leversbeing adapted for intermitte-nt contact with said stationary and adjustable cam, motion being intermittently iinparted to said levers and the needle thereby receiving reciprocating motion of very large amplitude.-

5. In a twist lace machine, a needle, a bar carrying said needle, means supporting said bar, a strip at the upper edge of said bar for reinforcing same, a guide opening thereimpartreciprocatin for a needle, vertically disposedguides for the needle, leverspivotally connected to the bar and to each other, one of said levers being pivotally connected to the needle "to impart reciprocating movement to theneedlecarrying bar, a stationary and adjustable ,cannone of said levers being adapted for a needle, a bar I intermittentcontact with said stationary cam whereby motion is intermittently imparted to said levers the needle receiving therefrom .a reciprocating motionot very large amplitude, a spool, means for assisting the needle to draw thread from said spool, said means comprising. a wheel, levers carrying said wheel, one of saidlevers being pivot-ally attached to the needle supporting bar, a slide, a stationary bar support carrying said slide, another of said levers being pivotally connected to said slide, said wheel'being adaptcd-to-have the threadpassed about its perimeter and tolhave rotary motion imparted thereto, in the same dire porting means.

6. In a twist lace m carrying said needle,means' supporting said bar, a reinforcingstrip at the upper edge of said bar, a guide opening therein for a neection, by the bar supachine, aneedle, a bar dle, vertically disposed guides for the needle,

:levers pivotally connected to the bar and to each other, and one of said levers being pivotally' connected to theneedle to impart rec'iproc'ating movement thereto, draw-bars and a cam for imparting reciprocating moveand adjustable cam, one of said levers being pivotally connected to said bar and be- .ing. adapted for intermittent contact with said stationary and adjustable cam motion being thereby intermittently imparted to ment to the needle carrying bar, a stationary said levers the needle thereby receivingv re- 'ciprocating motion of very large amplitude,

aspool, means for assisting the needleto draw thread from said spool, said means comprising a wheel, levers carrying said Wheel, 7 one of said levers being pivotally attached ,5 to the needle supporting bar, :a slide on the stationary support forsaidbar, a lever attached to said slide,.said:vvheel being adapted to have tlie thread -passed about its perimeterand to have rotary motion imparted to it, inftlie same direction, by the bar supporting means, thread gripping and releasingl meehanism consisting of a bar, azhook carried by and pivoted to said bar,a drawbar operated by a cam member and a support for said mechanism. I

'7; Ina twist lace machine, aneedle, a bar carrying'said needle, means supporting said "baiya reinforcing strip atrthe upper edge of said bar, a guide opening therein for a nee: dle, vertically disposed guides for the needle, "levers pivotally connected to -the bar and to each other, one of said levers being pivotally connected-to the needle to impart reciprocating movement thereto, a drawbar and cam for impartingreciprocating movement to the needle carrying bar, a stationary and adjustable cam, one'ot' the levers Which are pivotall-y connected. to the needle carrying bar being adapted for intermittent contact.

with said stationary and adjnstablecam by which motion is intermittently imparted to 'sa-idlevers the needle there'by'reeeiving reciprocating motion :of a very large amplitude, a spool, means for assisting the needle 5 todraW thread from said spool, said means comprising "a wheel, levers carrying said Wheel, one of said levers being pivota'lly attached to the needle supporting bar, a stationary supo-rt for said bar, a" slide onjsaid as support, anot'her'lever pivotally attached to said slide, said Wheel being adaptedto have thelthread passedabout its perimeter'and to have-rotary-mo'tion imparted toit, in the same direction, by the bar supporting means, thread gripping and releasing mechanism consisting of a hook carrying bar, a llOOkPiV- oted, thereto, adraivbar operated by. a cam member', a support for said mechanism, means for imparting reciprocating movement to the 5 needlebarsaid means comprising a lever having one end capable of oscillation, acam for oscillating said lever, a rack bar connected 'xvi'th saidlever, 'apinion'i-n mesh With said track, a sprocket turn'ab-le with said pinion, a "chain on said sprocket, and flexible connec fltions between said chain and dI'EiW-billSOIl jtheneedlebar. g

FELIXNOYER.

PAUL"P1LARD. 

